Apparatus and method for vehicle voltage stabilization

Method for voltage stabilization during an engine starting event of a vehicle, comprising in sequence:

• simultaneously establishing a first switch device of a switch device module closed to electrically couple a primary electrical energy storage device (ESD) and a contactor of a starter motor to a positive terminal of a load module managing electrical power distribution to one or more auxiliary loads, and a second switch device of the switch device module opened to electrically decouple an auxiliary ESD from the positive terminal of the load module;
• receiving, at the switch device module, an active Start_ON signal from a starter solenoid module indicating initiation of the engine starting event;
• establishing the second switch device of the switch device module closed to electrically couple the auxiliary ESD to the positive terminal of the load module within a predetermined delay since the active Start_ON signal was received;
• establishing the first switch device of the switch device module opened to electrically decouple the primary ESD and the contactor of the starter motor from the positive terminal of the load module only after the auxiliary ESD has been electrically coupled to the positive terminal of the load module;
• and
• in response to a predetermined condition occurring while the primary ESD and the contactor of the starter motor are electrically decoupled from the positive terminal of the load module, establishing the first switch device of the switch device module closed to electrically couple the positive terminal of the load module one or more electrical loads to the primary ESD and to the contactor of the starter motor.